About: http://webisa.webdatacommons.org/69755633

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	FIG. 1 is an enlarged cross sectional view of a polyaxial head screw with a split retainer ring which embodies the present invention, shown assembled with a rod to hold the rod and inserted in a vertebral bone.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca